lincan/include/can_sysdep.h

   1 #ifndef _CAN_SYSDEP_H
   2 #define _CAN_SYSDEP_H
   3
   4 #ifdef CAN_WITH_RTL
   5 #include <rtl.h>
   6 #include <rtl_sync.h>
   7 #include <rtl_core.h>
   8 #include <rtl_mutex.h>
   9 #include <rtl_sched.h>
  10 #endif /*CAN_WITH_RTL*/
  11
  12 /*#define __NO_VERSION__*/
  13 /*#include <linux/module.h>*/
  14
  15 #include <linux/version.h>
  16 #include <linux/wait.h>
  17 #include <linux/list.h>
  18 #include <linux/fs.h>
  19 #include <linux/ioport.h>
  20 #include <linux/delay.h>
  21 #include <linux/sched.h>
  22 #include <linux/interrupt.h>
  23 #include <asm/errno.h>
  24
  25 #include <asm/io.h>
  26 #include <asm/atomic.h>
  27 #include <asm/irq.h>
  28 #include <asm/uaccess.h>
  29
  30 #include "lincan_config.h"
  31
  32 /*optional features*/
  33 #if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,4,0))
  34 #define CAN_ENABLE_KERN_FASYNC
  35 #ifdef CONFIG_PCI
  36 #define CAN_ENABLE_PCI_SUPPORT
  37 #endif
  38 #ifdef CONFIG_OC_LINCANVME
  39 #define CAN_ENABLE_VME_SUPPORT
  40 #endif
  41 #endif
  42
  43 #if (LINUX_VERSION_CODE < KERNEL_VERSION(2,4,0))
  44 #include <linux/malloc.h>
  45 #else
  46 #include <linux/slab.h>
  47 #endif
  48
  49 #ifdef CAN_ENABLE_PCI_SUPPORT
  50 #include "linux/pci.h"
  51 #endif /*CAN_ENABLE_PCI_SUPPORT*/
  52
  53 /* Next is not sctrictly correct, because of 2.3.0, 2.3.1, 2.3.2
  54    kernels need next definitions  too */
  55 #if (LINUX_VERSION_CODE < KERNEL_VERSION(2,2,19)) /* may need correction */
  56   #define wait_queue_head_t struct wait_queue *
  57   #define wait_queue_t      struct wait_queue
  58   #define init_waitqueue_head(queue_head) (*queue_head=NULL)
  59   #define init_waitqueue_entry(qentry,qtask) \
  60                         (qentry->next=NULL,qentry->task=qtask)
  61   #define DECLARE_WAIT_QUEUE_HEAD(name) \
  62         struct wait_queue * name=NULL
  63   #define DECLARE_WAITQUEUE(wait, current) \
  64         struct wait_queue wait = { current, NULL }
  65   #define init_MUTEX(sem) (*sem=MUTEX)
  66   #define DECLARE_MUTEX(name) struct semaphore name=MUTEX
  67 #endif /* 2.2.19 */
  68
  69 #if (LINUX_VERSION_CODE < KERNEL_VERSION(2,4,0)) && !defined(DECLARE_TASKLET)
  70   #define tasklet_struct tq_struct
  71   #define DECLARE_TASKLET(_name, _func, _data) \
  72                 struct tq_struct _name = { sync: 0, routine: _func, data: (void*)_data }
  73
  74   /* void tasklet_init(struct tasklet_struct *t, void (*func)(unsigned long), unsigned long data); */
  75   #define tasklet_init(_tasklet, _func, _data) \
  76     do{ \
  77        /* (_tasklet)->next=NULL; */ \
  78        /* Above not needed for 2.2.x and buggy for 2.4.x */ \
  79        (_tasklet)->sync=0; \
  80        (_tasklet)->routine=_func; \
  81        (_tasklet)->data=(void*)_data; \
  82     }while(0)
  83
  84   /* void tasklet_schedule(struct tasklet_struct *t) */
  85   #define tasklet_schedule(_tasklet) \
  86     do{ \
  87        queue_task(_tasklet,&tq_immediate); \
  88        mark_bh(IMMEDIATE_BH); \
  89     }while(0)
  90
  91   /* void tasklet_kill(struct tasklet_struct *t); */
  92   #define tasklet_kill(_tasklet) \
  93                 synchronize_irq()
  94
  95 #endif /* 2.4.0 */
  96
  97
  98 #if (LINUX_VERSION_CODE < KERNEL_VERSION(2,5,7)) || (LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,0))
  99
 100 #define MINOR_NR \
 101         (MINOR(file->f_dentry->d_inode->i_rdev))
 102
 103 #else /* Linux kernel < 2.5.7 or >= 2.6.0 */
 104
 105 #define MINOR_NR \
 106         (minor(file->f_dentry->d_inode->i_rdev))
 107
 108 #endif /* Linux kernel < 2.5.7 or >= 2.6.0 */
 109
 110 #ifndef CAN_WITH_RTL
 111 #if ((LINUX_VERSION_CODE < KERNEL_VERSION(2,5,68)) && !defined(IRQ_RETVAL))
 112   typedef void can_irqreturn_t;
 113   #define CAN_IRQ_NONE
 114   #define CAN_IRQ_HANDLED
 115   #define CAN_IRQ_RETVAL(x)
 116 #else /* <=2.5.67 */
 117   typedef irqreturn_t can_irqreturn_t;
 118   #define CAN_IRQ_NONE    IRQ_NONE
 119   #define CAN_IRQ_HANDLED IRQ_HANDLED
 120   #define CAN_IRQ_RETVAL  IRQ_RETVAL
 121 #endif /* <=2.5.67 */
 122 #else /*CAN_WITH_RTL*/
 123   typedef int can_irqreturn_t;
 124   #define CAN_IRQ_NONE        0
 125   #define CAN_IRQ_HANDLED     1
 126   #define CAN_IRQ_RETVAL(x)   ((x) != 0)
 127 #endif /*CAN_WITH_RTL*/
 128
 129 #if (LINUX_VERSION_CODE < KERNEL_VERSION(2,5,33))
 130    #define can_synchronize_irq(irqnum) synchronize_irq()
 131 #else /* >=2.5.33 */
 132    #define can_synchronize_irq synchronize_irq
 133 #endif
 134
 135 #if (LINUX_VERSION_CODE < KERNEL_VERSION(2,4,0))
 136   #define del_timer_sync del_timer
 137 #endif /* <2.4.0 */
 138
 139 #ifndef CAN_WITH_RTL
 140 /* Standard LINUX kernel */
 141
 142 #define can_spinlock_t             spinlock_t
 143 #define can_spin_irqflags_t        unsigned long
 144 #define can_spin_lock              spin_lock
 145 #define can_spin_unlock            spin_unlock
 146 #define can_spin_lock_irqsave      spin_lock_irqsave
 147 #define can_spin_unlock_irqrestore spin_unlock_irqrestore
 148 #define can_spin_lock_init         spin_lock_init
 149
 150 #if defined(CONFIG_PREEMPT) || (LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,0))
 151 #define can_preempt_disable        preempt_disable
 152 #define can_preempt_enable         preempt_enable
 153 #else /*CONFIG_PREEMPT*/
 154 #define can_preempt_disable()      do { } while (0)
 155 #define can_preempt_enable()       do { } while (0)
 156 #endif /*CONFIG_PREEMPT*/
 157
 158 #define can_enable_irq             enable_irq
 159 #define can_disable_irq            disable_irq
 160
 161 #define can_printk                 printk
 162
 163 #else /*CAN_WITH_RTL*/
 164
 165 #define can_spinlock_t             rtl_spinlock_t
 166 #define can_spin_irqflags_t        rtl_irqstate_t
 167 #define can_spin_lock              rtl_spin_lock
 168 #define can_spin_unlock            rtl_spin_unlock
 169 #define can_spin_lock_irqsave      rtl_spin_lock_irqsave
 170 #define can_spin_unlock_irqrestore rtl_spin_unlock_irqrestore
 171 #define can_spin_lock_init         rtl_spin_lock_init
 172
 173 #define can_preempt_disable()      do { } while (0)
 174 #define can_preempt_enable()       do { } while (0)
 175
 176 #define can_enable_irq             rtl_hard_enable_irq
 177 #define can_disable_irq            rtl_hard_disable_irq
 178
 179 #define can_printk                 rtl_printf
 180
 181 /*
 182  * terrible hack to test rtl_file private_data concept, ugh !!!
 183  * this would result in crash on architectures,  where
 184  * sizeof(int) < sizeof(void *)
 185  */
 186 #define can_set_rtl_file_private_data(fptr, p) do{ fptr->f_minor=(long)(p); } while(0)
 187 #define can_get_rtl_file_private_data(fptr) ((void*)((fptr)->f_minor))
 188
 189 extern can_spinlock_t can_irq_manipulation_lock;
 190
 191 #endif /*CAN_WITH_RTL*/
 192
 193 #endif /*_CAN_SYSDEP_H*/